code: def run(self):
      while True:
          print(self.counter)
          self.counter += 1
          sleep(1)
  
file_path: pytorch-lightning/examples/app/interruptible/app.py
imports: from time import sleep
  from lightning.app import CloudCompute, LightningApp, LightningFlow, LightningWork
label_desc: Use image node_id 2 for calling the Work obj's underlying member method code with example usage: obj.run() without return types